Material: Nylon mesh and plush inside; Magnetic Closure Only fits golf Center-shafted Semicircle mallet putters with width under 4.5" and depth under 4.0" , not for Half-Mallet Putters. Confirm your putter size before your purchase The head covers will stop the metal clashing sound Easy ON and OFF Multiple color options are available, Color differences allowed for light effects The Putter Club head covers protect the clubs from striking each other and from weather and incidental damage while in the bag